@charset "utf-8";
* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  text-decoration: none;
  list-style-type: none;
}
.box1, .box2, .box3 {
  background-color: antiquewhite;
  display: flex;
  border: 1px solid;
  width: 500px;
  height: 500px;
}
.box1 .item1 {
  background-color: #BD1619;
  height: 100px;
  width: 33.333%;
}
.box1 .item2 {
  background-color: #248B50;
  height: 100px;
  width: 33.3333%;
}
.box1 .item3 {
  background-color: #1587D0;
  height: 100px;
  width: 33.333%;
}
.box2 .son{
	width: 80%;
	margin: 0px auto;
	display: flex;
}
.box2 .item1 {
  background-color: #BD1619;
  height: 100px;
  width: 33.333%;
}
.box2 .item2 {
  background-color: #248B50;
  height: 100px;
  width: 33.3333%;
}
.box2 .item3 {
  background-color: #1587D0;
  height: 100px;
  width: 33.333%;
}
.box3 .son{
	width: 50%;
	margin: 0px auto;
}
.box3 .item1{
	width: 100%;
	height: 100px;
	background-color: red;
}
.box3 .item{
	display: flex;
}
.item .item2{
	width: 50%;
	height: 100px;
	background-color: #00DD6C;
}
.item .item3{
	width: 50%;
	height: 100px;
	background-color: #3A46C9;
}